Internal structure of chloroplast with explanation?

1.	Internal structure of chloroplast with explanation?
Answer» \t\tChloroplasts are oval, spherical, disc-shaped or ribbon-shaped.\t\t\xa0\tThey are 5-10 mm in length and 2-4 mm in width.\tIt is a double-membraned organelle.\tThe space enclosed by the inner membrane is filled with a semi-solid substance called stroma\tFlattened, membranous sacks called thylakoids are present in the stroma.\tThe stroma contains several enzymes required for protein and carbohydrate synthesis, DNA, ribosomes and RNA.\tThe thylakoids are arranged like stacks of coins. These stacks are called grana.\tFlat membranous tubules called stroma lamellae connect the thylakoids.\tThe thylakoids contain space within them called a lumen.

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